# 7-4 披萨配料
pizza = "\n我们将要在这个披萨里添加的配料有： "
pizza += "\n请输入'退出'退出"
foodstuff = ""
while foodstuff != '退出':
    foodstuff = input(pizza)
    print(foodstuff)

# 7-5 为爱
love = "\nTell me you love me, if you don't say this program will never end: "
love += "\nEnter 'love' to end the program."
active = True
while active:
    message = input(love)
    if message == 'love':
        active = False
    else:
        print(message)